Week 2 practice assignment Question 7

[m vivek]

Wanted to ask how can maximum safe height of  on of the tower is 1000 m?

the point (900, 1000) lies on the plane's trajectory. and if a tower's height is exactly 1000m then its roof will lie on plane's path right? what am i missing here?

Thanks

[Debajyoti Biswas]

Hi,

Agreed. Although as we asked for mathematically what can be the maximum height, hence height 1000 m is taken. 

[m vivek]

Not sure, even "mathematically" any value less 1000 m like 999m or 999.9m makes sense and can be considered max. safe height. but if something is lying on the same path as of the plane I really cant bend my mind to think that its the safe height. Anyway, thanks.